Friction-brake.



' Todd/ZZ whom -it may. cionlcernhr` y [Be it known that L'LOUISP.

Navman.'

ITED l l :STATES Patented April 12 1904.

PATENT.. Orr/ICE.

noms I?, vAIiIQUET, or NEW YORK, N. Y., 'AssIeNoR rro VICTORLTALKINGMACHINE COMPANY, A CoaronATIoN or NEW JERSEY.-

- SPECIFICATION lfoaming part-of Letters Patent No. 757,159, dated Apre'12,-"19042l applicati-0u nea caliber 1,1908.

VALIQ'I, a citlzen of the United States of America, and a resident oftheborough of Bronx, city, county,

and State of NewYorlQhave invented certain new andv useful Improvementsin .Friction- Brakes,` of which the followingds a specicabrake for usein connection withl the springmotorsV of' talking-linacrhines.-

In themanufactnre of talking-machines it. isA desirable to produceasimple and, effective `friction-brake which may be readily. heldout ofengagement when desired and whichshall have a brake-padof yieldingmaterial which may beV readily removed or replaced, but which shall notbecome loose in operation. My invention accomplishes this result,and-the preferred'construction of ,the same is illustrated in Atheaccompanying sheet of drawings,

' in which- A Figure l'is a partial elevation showing the brake asapplied to the turn-table of .a talkingmachine usingdisk-records. Fig. 2is a plan viewof the same. Fig. 3 is a reverse plan View of the brakemechanism in its containingcasing, and Fig. i is a detail sectional viewshowing the method of attaching the brakef pad to the brake-arm.'

Throughout the drawings like reference-Hgures indicate like parts.v l

- 1 represents themotor-,box voi a' talking-machine, on which 'ismounted the rotating table 2, carrying thedislshaped soundrecord 2.

- S'isacircular rib on Ithe under side of the table 2, located at somedistance from the cir'- cumference thereof.

f 4 is the containing-case for the brake mechj anism, usually' madeofcast metal, open; at the bottom'an'dfastened to the top of the box i byscrews passing through the perforated lugs 4 4a. This casing has achamber of tapering shape, in theI upper wall of which is journaled thebell-crank 5, one crank-arm, v5t, being outside of the casing and theother crank-arm, 5, inside saidcasin'g. The 'pitman yis; pivoted.

the left, Fig. 3,

other side of the Serial No. 175,298. (No model.)

to the crank-armb at one end andhas itsother endl loosely` guided in the`passagerwayl 8, formed in the small end ofthe casing lThe spiral spring7 surrounds the pitmanzand tends to'frce it toward the larger end `ofthefcasing The outer crank-arm 5 has a ilexible extension 9, which maybe bent back 4and over the brake-pad 10, of leather or other suitableyielding material, thereby vholding said pad in position on thecrank-arm 5a. To holdfthe brake-pad more securely, the ciiexyilole fextension 9 may have'a' pointed tip 11, which may.

be driven down into the pad l0, as shown' in The bell-crank 5 may berotatedbypthe handle l2 or other ,convenient means," and the brakemechanism is located under Vthe table 2, so that'barely any part of it,except the han- .dle 12, extends beyond the outer edge of said table.

The operation of theapparatus is as Jfollows: When the parts are in theposition shown in full lines in Fig. 8 and in full and broken lines inFig. 2, the spring? forces the pitman 6 to-` ward the larger end of thecasing 4, and the pitman tends to turn the bell-'crank 5 toward whichforces the brake-pad l0 against the rib 3 of the table 2 with forcesulicient to prevent the rotation of the table. When the brake is to bedisengaged, the handle l2 is thrown into the position Yshown in brokenlines in Fig. 3, thereby withdrawing b and pitman' passing the fore thepitman brings up against the side of the rcasing 4, as shown 1n brokenlines In Fig.

-3, andthe parts remain atLres't in that position, h'olding'thebrakedisengaged. To apply the brake, a slight movement of the handle 12 issuilicient to carry the crank 5b to the dead-point and permits thespring 7 to :torce the bell-crank around until the brake-pad againpresses upon the rib 3.

The advantages of my invention comprise thegpowerul and certain. actionof the brake, its ease of manipulation, non-liability of the -brake-padto become detached while in operthe pad lO from engagement with the rib3,

-and the crank-arm 5 dead-point or' the cranks 'revolution just be- Iation, and convenient location of the brake mechanism under the table,Where it is not liable to be damaged.- I

Oi course various changes could be madeinthe details ofconstructionillustrated'Without departing fromthe spirit and scope of myinvention.

Having, therefore, described my invention, what I claim as new, anddesire to protect by Letters Patent, isM

1.- The combination of the containingcas ing, the bell-crank journaledin the Wall thereof, the spring-actuated pitman pivoted to the crank-arminside the casing and the brake-pad lcarried by the crank-arm outside ofthe casing, together with means for rotating the bell- Izrank, thecasing being so shaped as to permit the inner crank and spring-pitman topass slightly beyond the dead-point when the brake is in its position ofdisengagement. l .y

2. The combination of the casing having a tapering chamber formedtherein, the bellcrank jonrnaled in the Wall of the casing near one sideat the larger end thereof,'a pitman pivoted to the crank-arm inside thecasing, and

l having' its other end loosely guided'in the smaller end of the casing,a sprlng forcing said pitman toward the larger end of the casing, and abrake-pad carried bythe crank-arm outsideof thecasing. I

3. The combination. of the casing having a' tapering chamber formedtherein, the bellcrank journaled in the Wall of the casing near,

provided with a pointed tip driven into-the one side at'the lai-'gerendthereof, a pitman .pivoted'to the crankarm inside theeasing, and havingits other end loosely guidedin the' smaller end of t ie casing, a springforcing said brake-pad. I c. y

6. vIn a friction-brake mechanismfor talk-'- ing-machines, thecombination ofthe rotatingI ,table provided'with a circular rib onv itsunder side located some distance from its circumference, the motor-'boxon which the table is mounted, the brake mechanism located on top ofsaid box under the table, and cooperating with said circular rib, andthe brake-operating handle projecting beyond said table.

Signed at New York, N. Y., this 21st' ,day

of September, 1903.

' LOUIS P. VALIQUET.

Witnesses:

J. E. PEARsoN, M. G. CRAWFORD.

